US20030151569A1 - Flat-panel light emitting pixel with luminance feedback - Google Patents

Flat-panel light emitting pixel with luminance feedback Download PDF

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Publication number
US20030151569A1
US20030151569A1 US10/074,541 US7454102A US2003151569A1 US 20030151569 A1 US20030151569 A1 US 20030151569A1 US 7454102 A US7454102 A US 7454102A US 2003151569 A1 US2003151569 A1 US 2003151569A1
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feedback
photo
addressable
light
light emitter
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US6720942B2 (en
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Paul Lee
Ronald Cok
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Global OLED Technology LLC
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Eastman Kodak Co
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Priority to EP03075300A priority patent/EP1335430A1/en
Priority to JP2003033693A priority patent/JP2003271098A/en
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    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • GPHYSICS
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    • G09G2300/00Aspects of the constitution of display devices
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    • GPHYSICS
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    • G09G2300/088Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements using a non-linear two-terminal element
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/06Details of flat display driving waveforms
    • G09G2310/061Details of flat display driving waveforms for resetting or blanking
    • GPHYSICS
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    • GPHYSICS
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    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • GPHYSICS
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    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness
    • GPHYSICS
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    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G09G2360/147Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
    • G09G2360/148Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel the light being detected by light detection means within each pixel

Definitions

  • the present invention relates to solid-state flat-panel display devices and more particularly to such display devices having means to optimize the luminance of pixels in the display through the use of optical feedback information from the pixels.
  • OLEDs Solid-state organic light emitting diodes
  • These display devices utilize current passing through thin films of organic material to generate light.
  • OLED materials are also responsive to electromagnetic radiation and, when appropriately biased within an electrical circuit, can produce a current dependent on the ambient light.
  • U.S. Pat. No. 5,929,845 issued Jul. 27, 1999 to Wei et al., describes a system that both emits and detects light using an organic electro-luminescent apparatus.
  • the luminous efficiency of the OLED devices often decreases significantly with operation due to the instability of the organic materials. This instability may be as a result of aging, usage, temperature changes, humidity, or other environmental stresses. Light output can vary from pixel to pixel due to processing variations, as well, causing display uniformity problems.
  • brightness and contrast controls are often available on CRT and LCD display devices. These controls can be based on information from the device itself, using a reference pixel within the display.
  • U.S. Pat. No. 5,157,525; issued Oct. 20, 1992 to Eaton et al. describes the use of a reference pixel with separate control to maintain a pre-selected value for contrast or absolute brightness using a feedback arrangement which includes an LCD reference element. The feedback information is determined by measuring the average transmissivity of the LCD material with a photo-detector.
  • an image display that includes an addressable image display pixel, having a substrate; a light emitter formed on the substrate; a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to light emitted by the light emitter; and, a feedback readout circuit formed on the substrate and responsive to the feedback voltage signal to provide a feedback signal representing the light output of the light emitter, the feedback readout circuit including a transistor amplifier, means for resetting the readout circuit, and a select switch.
  • the advantages of this invention are the ability to correct for non-uniformity and the ability to correct for changes due to aging in emissive digital image display devices.
  • FIG. 1 is a schematic block diagram of a display device having addressable pixels according to one embodiment of the present invention
  • FIG. 2 is a circuit diagram of an embodiment of a display device pixel according to the present invention.
  • FIG. 3 is a timing diagram illustrating the operation of one embodiment of a display device pixel according to the present invention.
  • FIG. 4 is a circuit diagram of a prior art emissive LED
  • FIG. 5 is a circuit diagram of a plurality of addressable display device pixels according to an embodiment of the present invention.
  • an image display 10 includes a display pixel array 12 having an array of addressable pixels 11 including light emitters and photo-sensors as described below.
  • the photo-sensors can be photodiodes or photo-capacitors.
  • the feedback readout circuit further includes a transfer gate for transferring photo charge from photo-capacitor to the transistor amplifier as is known in the art.
  • the photo-sensors in the addressable pixels 11 are readout by an output circuit 15 that operates in the same way as the output circuit in a conventional photodiode or photo-capacitor image sensor array.
  • a display control circuit 14 receives a feedback signal 30 from the display pixel array 12 and display input signals 13 from an external source and modifies the display input signals according to the feedback signals to form data signals 32 that are compensated for the light output of the addressable pixels 11 of the display.
  • An address control circuit 16 is responsive to the data signals 32 to produce compensated data signals 22 , select signals 24 and a reset signal 26 that are used to drive the addressable pixels 11 of the array 12 .
  • the address control circuit 16 can be embodied as an analog circuit or a computer with a memory containing instructions and data and a central processing unit.
  • the address control circuit 16 writes data to addressable pixels 11 using, data, select, and reset signals, represented by signals 22 , 24 , and 26 , respectively.
  • Feedback signals 30 generated by the photo-sensor(s) within the addressable pixels are passed to the display control circuit 14 , processed, and the resulting data signals 32 passed to the address control circuit 16 .
  • FIG. 4 illustrates an addressable light-emitting pixel as is known in the prior art.
  • the addressable pixel includes a drive circuit for driving a light emitting diode LED 102 .
  • a Vdd power line 100 supplies power to the LED 102 through drive transistor 104 .
  • the drive transistor 104 is responsive to a voltage generated by a charge stored in capacitor 106 .
  • the charge is deposited by transistor 108 in response to signals on data and select lines 22 and 24 respectively as is well known in the prior art.
  • the addressable pixel 11 in addition to including the light emitter drive circuit of FIG. 4, further includes a photo-sensor that is located on the same substrate as the light emitter 102 and is optically coupled thereto.
  • the photodiode 34 can for example be a photodiode as shown, or a photo-capacitor (not shown).
  • the addressable pixel 11 further includes a feedback read-out circuit on the same substrate having a transistor amplifier 36 , a read-out transistor 40 , and a reset transistor 38 driven by a reset signal 26 .
  • the transistor amplifier 36 amplifies the signal from the photodiode 34 and supplies a feedback voltage signal to the read-out transistor 40 to provide a feedback signal representing the light output of the light emitter.
  • the read-out transistor 40 is configured as a switch responsive to a select signal to cause the feedback signal on line 60 to be read out.
  • the select signal applied to read-out transistor 40 can be the same select signal 24 used to control the depositing of charge on the capacitor 106 .
  • the select signal can be a separate photo-sensor select signal that is applied on a separate external photo sensor select line 39 as shown with a dotted line
  • FIG. 3 Timing for the circuit shown in FIG. 2 is illustrated in FIG. 3.
  • the data signal 22 is shown as high.
  • the select signal 24 is applied to transistor 108 to cause a charge representing the data to be deposited on the capacitor 106 .
  • the charge on capacitor 106 quickly settles to the new desired data value and light is output by the light emitter 102 in proportion to the charge on the capacitor 106 .
  • the reset signal 26 drives the reset transistor 38 to bias the photo-diode 34 to Vdd. When the reset signal 26 is removed, the photodiode begins to discharge in response to light from the light emitter 102 at a rate proportional to the intensity of the emitted light.
  • This signal is converted to a voltage by the amplifier transistor 36 and is available on the output of read-out transistor 40 on line 60 as long as the read-out transistor is selected. If the read-out transistor 40 is controlled by the select line 24 , the output from the read-out circuit will be available from the end of the reset signal 26 to the end of the select signal 24 . If the read-out transistor 40 is controlled by an external select line 39 , the output will be available as long as the external select signal is on and from the end of the reset signal 26 until the photodiode is completely discharged. The output voltage is measured as is known in the prior art for photodiode image sensors after the end of the reset signal by the output circuit 15 to determine the light level output by the light emitter 102 .
  • FIG. 5 an array of addressable pixels according to one embodiment of the present invention is shown.
  • Data, select, and reset signals 22 , 24 , and 26 respectively are shown connected to a two-by-two array of addressable pixels 11 .
  • the read-out lines 60 connected to the output circuit 15 are common over each column of the array.
  • the photo-sensor 34 When activated, some of the light emitted from the light emitters 102 of the addressable pixels is directly detected by the photo-sensor 34 .
  • the photo-sensor(s) are optically coupled to the light emitters and absorb light from the light emitters either directly (where the photo-sensors are located adjacent to the light emitters—with no intervening optical boundaries), or indirectly through reflection or transmission through one or more layers.
  • the photo-sensors may be located on the substrate directly above or below the light emitters, or they may be located on the substrate coplanar with the light emitters.
  • the present invention is not limited to one photo-sensor per light emitter. Groups of light emitters can be sensed by a single photo-sensor to reduce the number of photo-sensors in the array, or to provide a measure of light over larger areas of the array thus simplifying the supporting logic and interconnects.
  • the signals from the photo-sensors can also be combined in signal processing electronics to provide average signals for correcting for example for color imbalances over a whole array, or portions of an array.
  • a photo-sensor may be coupled to a single color element of a three-color pixel or to the entire pixel as a whole.
  • the feedback signal detected from the photo-sensor elements can be used to provide feedback from the light detected in the display control circuit to compensate for changes or differences in light output from pixels.
  • the signal generated is compared to a priori knowledge of the signal generated at the desired luminance (a reference). This knowledge can be obtained from various sources, such as a model of emitter behavior, measurements on an exemplary display, or experience with similar displays in the past.
  • the current driving the display materials is then increased or decreased until the signal from the photo-sensor matches the desired signal. When this occurs, the light generated by the light emitters is at the desired level. Note that as the light emitters degrade over time, become less efficient, and emit less light, the resulting photo-electric current will decrease, causing an increase in driving current to compensate for the reduced light output.
  • Ambient light may also pass through the emissive layers, substrate, or cover into the photo-sensors.
  • the optically coupled light from the light emitter and ambient light is then detected by the photo-sensor. Compensation can be made for this situation.
  • the simplest mechanism for distinguishing between ambient and display light is to first measure the ambient light current. This is done simply by applying zero current to the light emitting pixels so that the pixels emit no light. Any residual signals from the photo-detectors will be due to ambient radiation and any reference comparison may adjust for this residual signal. This reference adjustment can be done at the time the display device is powered up or periodically while it is in use.
  • a reference adjustment can also be used to automatically compensate for changes in the ambient environment.
  • a display device When viewed in a dark environment (little ambient radiation), a display device need not be as bright as when viewed in a lighter environment (more ambient radiation). If the display device light output is re-calibrated periodically, it will maintain a fixed difference between the ambient and displayed light even if the ambient light changes. This can, in turn, increase display device lifetime by reducing unnecessary display brightness in a dark environment and increase display device visibility in a bright environment. If brightness compensation is done on a pixel address basis, it is even possible to correct different parts of the display in different ways, correcting for devices that may be partly shaded, for example.
  • the feedback circuitry is integrated directly onto the same substrate as the display device. In general, higher performance and greater accuracy can be achieved by integrating the circuitry directly with the display device.
  • the light emitters 102 are organic light emitting diodes (OLEDs).
  • OLEDs organic light emitting diodes
  • the photo-diode 34 can be fabricated of semi-conductor materials whose deposition and processing are compatible with the light emitters 102 , for example traditional crystalline silicon, poly-silicon, or amorphous silicon materials. Any other compatible photo-sensor materials may also be used, for example, the photo-diodes 34 can be composed of organic semiconductor materials disposed between electrodes so as to be responsive to light.
  • the light emitting elements of the addressable pixels of the present invention can be Organic Light Emitting Diodes (OLEDs) including small molecule polymeric OLEDs as disclosed in but not limited to U.S. Pat. No. 4,769,292, issued Sep. 6, 1988 to Tang et al.; and U.S. Pat. No. 5,061,569 issued Oct. 29, 1991 to VanSlyke et al. Many combinations and variations of OLED materials would be apparent to those knowledgeable in the art and can be used to fabricate such a device and are included in this invention.
  • OLEDs Organic Light Emitting Diodes
  • the present invention provides a highly integrated means to provide optical feedback to an array of emissive pixels in a display. This feedback can lengthen the device lifetime, reduce power consumption, improve the image quality, and provide flexibility in application.

Abstract

An image display includes an addressable image display pixel, having a substrate; a light emitter formed on the substrate; a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to light emitted by the light emitter; and, a feedback readout circuit formed on the substrate and responsive to the feedback voltage signal to provide a feedback signal representing the light output of the light emitter, the feedback readout circuit including a transistor amplifier, means for resetting the readout circuit, and a select switch.

Description

    FIELD OF THE INVENTION
  • The present invention relates to solid-state flat-panel display devices and more particularly to such display devices having means to optimize the luminance of pixels in the display through the use of optical feedback information from the pixels. [0001]
  • BACKGROUND OF THE INVENTION
  • Solid-state organic light emitting diodes (OLEDs) are of great interest for use in flat-panel digital display devices. These display devices utilize current passing through thin films of organic material to generate light. OLED materials are also responsive to electromagnetic radiation and, when appropriately biased within an electrical circuit, can produce a current dependent on the ambient light. For example, U.S. Pat. No. 5,929,845, issued Jul. 27, 1999 to Wei et al., describes a system that both emits and detects light using an organic electro-luminescent apparatus. [0002]
  • The luminous efficiency of the OLED devices often decreases significantly with operation due to the instability of the organic materials. This instability may be as a result of aging, usage, temperature changes, humidity, or other environmental stresses. Light output can vary from pixel to pixel due to processing variations, as well, causing display uniformity problems. [0003]
  • Attempts have been made in the prior art to optimize particular display systems to overcome some of the problems noted above. For example, U.S. Pat. No. 5,216,504 issued Jun. 1, 1993 to Webb et al. describes a digital control device within a video monitor to calibrate or otherwise optimize the display, either with human input or under automated computer control. [0004]
  • Some systems integrate user-controlled mechanisms to provide more flexible operation or optimal use under varying conditions. For example, brightness and contrast controls are often available on CRT and LCD display devices. These controls can be based on information from the device itself, using a reference pixel within the display. U.S. Pat. No. 5,157,525; issued Oct. 20, 1992 to Eaton et al. describes the use of a reference pixel with separate control to maintain a pre-selected value for contrast or absolute brightness using a feedback arrangement which includes an LCD reference element. The feedback information is determined by measuring the average transmissivity of the LCD material with a photo-detector. [0005]
  • U.S. Pat. No. 5,910,792 issued Jun. 8, 1999 to Hansen et al. compares current passing through a resistive layer with that of a current source to provide a feedback compensation for temperature-induced brightness variation. It is also known to calibrate display devices through the use of external sensors which measure the light output from the display device and construct a calibration table for use by the device. See for example U.S. Pat. No. 5,371,537, issued Dec. 6, 1994 to Bohan et al. This approach has the problem that the sensor device obscures the display during the calibration and is not capable of providing real time operation. Another problem with these approaches is that the feedback does not directly respond to the emissivity of the pixels themselves, or address problems with different types (e.g. colors) of pixels within a display. Moreover, these approaches are not useful for correcting uniformity variations among individual pixel display elements. [0006]
  • There is a need therefore for an improved addressable display pixel design providing optical feedback that avoids the problems noted above. [0007]
  • SUMMARY OF THE INVENTION
  • The need is met according to the present invention by providing an image display that includes an addressable image display pixel, having a substrate; a light emitter formed on the substrate; a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to light emitted by the light emitter; and, a feedback readout circuit formed on the substrate and responsive to the feedback voltage signal to provide a feedback signal representing the light output of the light emitter, the feedback readout circuit including a transistor amplifier, means for resetting the readout circuit, and a select switch. [0008]
  • Advantages [0009]
  • The advantages of this invention are the ability to correct for non-uniformity and the ability to correct for changes due to aging in emissive digital image display devices.[0010]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic block diagram of a display device having addressable pixels according to one embodiment of the present invention; [0011]
  • FIG. 2 is a circuit diagram of an embodiment of a display device pixel according to the present invention; [0012]
  • FIG. 3 is a timing diagram illustrating the operation of one embodiment of a display device pixel according to the present invention; [0013]
  • FIG. 4 is a circuit diagram of a prior art emissive LED; and [0014]
  • FIG. 5 is a circuit diagram of a plurality of addressable display device pixels according to an embodiment of the present invention.[0015]
  • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 1, an [0016] image display 10 includes a display pixel array 12 having an array of addressable pixels 11 including light emitters and photo-sensors as described below. The photo-sensors can be photodiodes or photo-capacitors. In the case of a photo-capacitor, the feedback readout circuit further includes a transfer gate for transferring photo charge from photo-capacitor to the transistor amplifier as is known in the art. The photo-sensors in the addressable pixels 11 are readout by an output circuit 15 that operates in the same way as the output circuit in a conventional photodiode or photo-capacitor image sensor array. A display control circuit 14 receives a feedback signal 30 from the display pixel array 12 and display input signals 13 from an external source and modifies the display input signals according to the feedback signals to form data signals 32 that are compensated for the light output of the addressable pixels 11 of the display. An address control circuit 16 is responsive to the data signals 32 to produce compensated data signals 22, select signals 24 and a reset signal 26 that are used to drive the addressable pixels 11 of the array 12.
  • The [0017] address control circuit 16 can be embodied as an analog circuit or a computer with a memory containing instructions and data and a central processing unit. The address control circuit 16 writes data to addressable pixels 11 using, data, select, and reset signals, represented by signals 22, 24, and 26, respectively. Feedback signals 30 generated by the photo-sensor(s) within the addressable pixels are passed to the display control circuit 14, processed, and the resulting data signals 32 passed to the address control circuit 16.
  • FIG. 4 illustrates an addressable light-emitting pixel as is known in the prior art. The addressable pixel includes a drive circuit for driving a light [0018] emitting diode LED 102. A Vdd power line 100 supplies power to the LED 102 through drive transistor 104. The drive transistor 104 is responsive to a voltage generated by a charge stored in capacitor 106. The charge is deposited by transistor 108 in response to signals on data and select lines 22 and 24 respectively as is well known in the prior art.
  • Referring to FIG. 2, according to one embodiment of the present invention the [0019] addressable pixel 11, in addition to including the light emitter drive circuit of FIG. 4, further includes a photo-sensor that is located on the same substrate as the light emitter 102 and is optically coupled thereto. The photodiode 34 can for example be a photodiode as shown, or a photo-capacitor (not shown). The addressable pixel 11 further includes a feedback read-out circuit on the same substrate having a transistor amplifier 36, a read-out transistor 40, and a reset transistor 38 driven by a reset signal 26. The transistor amplifier 36 amplifies the signal from the photodiode 34 and supplies a feedback voltage signal to the read-out transistor 40 to provide a feedback signal representing the light output of the light emitter. The read-out transistor 40 is configured as a switch responsive to a select signal to cause the feedback signal on line 60 to be read out. The select signal applied to read-out transistor 40 can be the same select signal 24 used to control the depositing of charge on the capacitor 106. Alternatively the select signal can be a separate photo-sensor select signal that is applied on a separate external photo sensor select line 39 as shown with a dotted line
  • Timing for the circuit shown in FIG. 2 is illustrated in FIG. 3. Referring to FIG. 3, when data is available to be transferred to a pixel the [0020] data signal 22 is shown as high. During the time that data is available, the select signal 24 is applied to transistor 108 to cause a charge representing the data to be deposited on the capacitor 106. The charge on capacitor 106 quickly settles to the new desired data value and light is output by the light emitter 102 in proportion to the charge on the capacitor 106. The reset signal 26 drives the reset transistor 38 to bias the photo-diode 34 to Vdd. When the reset signal 26 is removed, the photodiode begins to discharge in response to light from the light emitter 102 at a rate proportional to the intensity of the emitted light. This signal is converted to a voltage by the amplifier transistor 36 and is available on the output of read-out transistor 40 on line 60 as long as the read-out transistor is selected. If the read-out transistor 40 is controlled by the select line 24, the output from the read-out circuit will be available from the end of the reset signal 26 to the end of the select signal 24. If the read-out transistor 40 is controlled by an external select line 39, the output will be available as long as the external select signal is on and from the end of the reset signal 26 until the photodiode is completely discharged. The output voltage is measured as is known in the prior art for photodiode image sensors after the end of the reset signal by the output circuit 15 to determine the light level output by the light emitter 102.
  • Referring to FIG. 5, an array of addressable pixels according to one embodiment of the present invention is shown. Data, select, and reset [0021] signals 22, 24, and 26 respectively are shown connected to a two-by-two array of addressable pixels 11. The read-out lines 60 connected to the output circuit 15 are common over each column of the array.
  • When activated, some of the light emitted from the [0022] light emitters 102 of the addressable pixels is directly detected by the photo-sensor 34. The photo-sensor(s) are optically coupled to the light emitters and absorb light from the light emitters either directly (where the photo-sensors are located adjacent to the light emitters—with no intervening optical boundaries), or indirectly through reflection or transmission through one or more layers. The photo-sensors may be located on the substrate directly above or below the light emitters, or they may be located on the substrate coplanar with the light emitters.
  • The present invention is not limited to one photo-sensor per light emitter. Groups of light emitters can be sensed by a single photo-sensor to reduce the number of photo-sensors in the array, or to provide a measure of light over larger areas of the array thus simplifying the supporting logic and interconnects. The signals from the photo-sensors can also be combined in signal processing electronics to provide average signals for correcting for example for color imbalances over a whole array, or portions of an array. In particular, a photo-sensor may be coupled to a single color element of a three-color pixel or to the entire pixel as a whole. [0023]
  • The feedback signal detected from the photo-sensor elements can be used to provide feedback from the light detected in the display control circuit to compensate for changes or differences in light output from pixels. Generally speaking, the signal generated is compared to a priori knowledge of the signal generated at the desired luminance (a reference). This knowledge can be obtained from various sources, such as a model of emitter behavior, measurements on an exemplary display, or experience with similar displays in the past. The current driving the display materials is then increased or decreased until the signal from the photo-sensor matches the desired signal. When this occurs, the light generated by the light emitters is at the desired level. Note that as the light emitters degrade over time, become less efficient, and emit less light, the resulting photo-electric current will decrease, causing an increase in driving current to compensate for the reduced light output. [0024]
  • Ambient light may also pass through the emissive layers, substrate, or cover into the photo-sensors. The optically coupled light from the light emitter and ambient light is then detected by the photo-sensor. Compensation can be made for this situation. The simplest mechanism for distinguishing between ambient and display light is to first measure the ambient light current. This is done simply by applying zero current to the light emitting pixels so that the pixels emit no light. Any residual signals from the photo-detectors will be due to ambient radiation and any reference comparison may adjust for this residual signal. This reference adjustment can be done at the time the display device is powered up or periodically while it is in use. [0025]
  • A reference adjustment can also be used to automatically compensate for changes in the ambient environment. When viewed in a dark environment (little ambient radiation), a display device need not be as bright as when viewed in a lighter environment (more ambient radiation). If the display device light output is re-calibrated periodically, it will maintain a fixed difference between the ambient and displayed light even if the ambient light changes. This can, in turn, increase display device lifetime by reducing unnecessary display brightness in a dark environment and increase display device visibility in a bright environment. If brightness compensation is done on a pixel address basis, it is even possible to correct different parts of the display in different ways, correcting for devices that may be partly shaded, for example. [0026]
  • The feedback circuitry is integrated directly onto the same substrate as the display device. In general, higher performance and greater accuracy can be achieved by integrating the circuitry directly with the display device. [0027]
  • In one embodiment, the [0028] light emitters 102 are organic light emitting diodes (OLEDs). The photo-diode 34 can be fabricated of semi-conductor materials whose deposition and processing are compatible with the light emitters 102, for example traditional crystalline silicon, poly-silicon, or amorphous silicon materials. Any other compatible photo-sensor materials may also be used, for example, the photo-diodes 34 can be composed of organic semiconductor materials disposed between electrodes so as to be responsive to light.
  • The light emitting elements of the addressable pixels of the present invention can be Organic Light Emitting Diodes (OLEDs) including small molecule polymeric OLEDs as disclosed in but not limited to U.S. Pat. No. 4,769,292, issued Sep. 6, 1988 to Tang et al.; and U.S. Pat. No. 5,061,569 issued Oct. 29, 1991 to VanSlyke et al. Many combinations and variations of OLED materials would be apparent to those knowledgeable in the art and can be used to fabricate such a device and are included in this invention. [0029]
  • The present invention provides a highly integrated means to provide optical feedback to an array of emissive pixels in a display. This feedback can lengthen the device lifetime, reduce power consumption, improve the image quality, and provide flexibility in application. [0030]
  • The invention has been described in detail with particular reference to certain embodiments thereof, but it will be understood that variations and modifications can be effected within the spirit and scope of the invention. [0031]
  • Parts List [0032]
  • [0033] 10 image display
  • [0034] 11 addressable display
  • [0035] 12 display pixel array
  • [0036] 13 display input signals
  • [0037] 14 display control circuit
  • [0038] 15 output circuit
  • [0039] 16 address control circuit
  • [0040] 22 data signals
  • [0041] 24 select signals
  • [0042] 26 reset signal
  • [0043] 30 feedback signal
  • [0044] 32 data signal
  • [0045] 34 photo-diode
  • [0046] 36 transistor amplifier
  • [0047] 38 reset transistor
  • [0048] 39 photo sensor select line
  • [0049] 40 readout transistor
  • [0050] 60 feedback signal line
  • [0051] 100 Vdd power line
  • [0052] 102 LED
  • [0053] 104 drive transistor
  • [0054] 106 capacitor
  • [0055] 108 switch transistor

Claims (25)

What is claimed is:
1. An addressable image display pixel, comprising:
a) a substrate;
b) a light emitter formed on the substrate;
c) a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to light emitted by the light emitter; and,
d) a feedback readout circuit formed on the substrate and responsive to the feedback voltage signal to provide a feedback signal representing the light output of the light emitter, the feedback readout circuit including a transistor amplifier, means for resetting the readout circuit, and a select switch.
2. The addressable image display pixel claimed in claim 1, wherein the photo-sensor is a photodiode.
3. The addressable image display pixel claimed in claim 1, wherein the photo-sensor is a photo-capacitor, and wherein the feedback readout circuit further includes a transfer gate for transferring photo charge from the photo-capacitor to the transistor amplifier.
4. The addressable image display pixel claimed in claim 2, wherein the photo-sensor is an organic or silicon semiconductor.
5. The addressable image display pixel claimed in claim 1, wherein the light emitter is an organic light emitting diode.
6. The addressable image display pixel claimed in claim 1, wherein the means for resetting the feedback circuit is a reset transistor switch responsive to a reset signal for initializing the photo-sensor.
7. The addressable image display pixel claimed in claim 1, wherein the means for resetting the feedback circuit is a reset line for initializing the photo-sensor.
8. The addressable image display pixel claimed in claim 1, wherein the addressable light emitter is addressable by a select signal and the feedback readout circuit is responsive to the select signal to output the feedback signal.
9. The addressable image display pixel claimed in claim 1, wherein the addressable light emitter is addressable by a select signal and the feedback readout circuit is responsive to a separate photo-sensor select signal to output the feedback signal.
10. The addressable image display pixel claimed in claim 1, further comprising a plurality of light emitters formed on the substrate.
11. The addressable image display pixel claimed in claim 1, wherein the light emitters are colored light emitters in a color pixel.
12. A display device, comprising:
a) display pixel array, having
i) a substrate; and
ii) a plurality of addressable image display pixels formed on the substrate, each image display pixel including a light emitter, a photo-sensor optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to light emitted by the light emitter; and, a feedback readout circuit formed on the substrate and responsive to the feedback voltage signal to provide a feedback signal representing the light output of the light emitter, the feedback readout circuit including a transistor amplifier, means for resetting the readout circuit, and a select switch; and
b) a display control circuit for receiving display input signals and modifying the display input signals in response to the feedback signals from the addressable display pixels.
13. The display device claimed in claim 12, wherein the photo-sensors are photodiodes.
14. The display device claimed in claim 12, wherein the photo-sensors are photo-capacitors, and wherein the feedback readout circuits further include a transfer gate for transferring photo charge from the photo-capacitors to the transistor amplifiers.
15. The display device claimed in claim 12, wherein the photo-sensors are organic or silicon semiconductors.
16. The display device claimed in claim 12, wherein the light emitters are organic light emitting diodes.
17. The display device claimed in claim 12, wherein the means for resetting the feedback circuit are reset transistor switches responsive to a reset signal for initializing the photo-sensors.
18. The display device claimed in claim 12, wherein the means for resetting the feedback circuit is a reset line for initializing the photo-sensors.
19. The display device claimed in claim 12, wherein the addressable light emitters are addressable by a select signal and the feedback readout circuits are responsive to the select signal to output the feedback signal.
20. The display device claimed in claim 12 wherein the addressable light emitter is addressable by a select signal and the feedback readout circuit is responsive to a separate photo-sensor select signal to output the feedback signal.
21. The display device claimed in claim 12, wherein the image display pixels include a plurality of individually addressable light emitters.
22. The display device claimed in claim 21, wherein the plurality of light emitters are differently colored light emitters and the image display pixel is a color pixel.
23. The display device claimed in claim 21, wherein the plurality of light emitters emit the same color of light.
24. The display device claimed in claim 12, further comprising a plurality of addressable display pixels without photo-sensors.
25. The display device claimed in claim 12, further comprising an address control circuit for applying the modified display input signals to the display pixel array.
US10/074,541 2002-02-12 2002-02-12 Flat-panel light emitting pixel with luminance feedback Expired - Lifetime US6720942B2 (en)

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Cited By (138)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030098875A1 (en) * 2001-11-29 2003-05-29 Yoshiyuki Kurokawa Display device and display system using the same
US20050151059A1 (en) * 2004-01-13 2005-07-14 Seiko Epson Corporation Electro-optical device, method for driving the same, and electronic apparatus
US20050162737A1 (en) * 2002-03-13 2005-07-28 Whitehead Lorne A. High dynamic range display devices
US20050179625A1 (en) * 2004-01-02 2005-08-18 Choi Joon-Hoo Display device and driving method thereof
US20050200292A1 (en) * 2004-02-24 2005-09-15 Naugler W. E.Jr. Emissive display device having sensing for luminance stabilization and user light or touch screen input
US20050280766A1 (en) * 2002-09-16 2005-12-22 Koninkiljke Phillips Electronics Nv Display device
US20070008253A1 (en) * 2005-07-06 2007-01-11 Arokia Nathan Method and system for driving a pixel circuit in an active matrix display
US20070080908A1 (en) * 2003-09-23 2007-04-12 Arokia Nathan Circuit and method for driving an array of light emitting pixels
US20070195020A1 (en) * 2006-02-10 2007-08-23 Ignis Innovation, Inc. Method and System for Light Emitting Device Displays
US20070268577A1 (en) * 2001-02-27 2007-11-22 Dolby Canada Corporation Hdr displays having location specific modulation
US20080055496A1 (en) * 2002-05-23 2008-03-06 Adiel Abileah Light sensitive display
US20080191976A1 (en) * 2004-06-29 2008-08-14 Arokia Nathan Voltage-Programming Scheme for Current-Driven Arnoled Displays
US20080225148A1 (en) * 2007-03-15 2008-09-18 Christopher Parks Reduced pixel area image sensor
US20080245561A1 (en) * 2005-12-21 2008-10-09 Rohde & Schwarz Gmbh & Co. Kg Housing for Shielding from Electromagnetic Interference
US20090160741A1 (en) * 2006-04-13 2009-06-25 Kazuyoshi Inoue Electro-optic device, and tft substrate for current control and method for manufacturing the same
US20090166643A1 (en) * 2004-08-13 2009-07-02 Paul Steven Schranz Light emitting and image sensing device and apparatus
US20100002026A1 (en) * 2007-02-01 2010-01-07 Dolby Laboratories Licensing Corporation Calibration of displays having spatially-variable backlight
US20100033469A1 (en) * 2004-12-15 2010-02-11 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US20100214282A1 (en) * 2009-02-24 2010-08-26 Dolby Laboratories Licensing Corporation Apparatus for providing light source modulation in dual modulator displays
US7872641B2 (en) 2002-02-20 2011-01-18 Apple Inc. Light sensitive display
US20110074753A1 (en) * 2009-09-25 2011-03-31 Sony Corporation Display apparatus
US20110095261A1 (en) * 2008-02-07 2011-04-28 Kazlas Peter T Flexible devices including semiconductor nanocrystals, arrays, and methods
US20110128262A1 (en) * 2009-12-01 2011-06-02 Ignis Innovation Inc. High resolution pixel architecture
US8026876B2 (en) 2006-08-15 2011-09-27 Ignis Innovation Inc. OLED luminance degradation compensation
US20120154337A1 (en) * 2010-12-15 2012-06-21 Semiconductor Energy Laboratory Co., Ltd. Semiconductor Device and Driving Method Thereof
US8207946B2 (en) 2003-02-20 2012-06-26 Apple Inc. Light sensitive display
US20120206421A1 (en) * 2011-02-10 2012-08-16 Cok Ronald S Digital display with integrated computing circuit
US8289429B2 (en) 2004-04-16 2012-10-16 Apple Inc. Image sensor with photosensitive thin film transistors and dark current compensation
US8441422B2 (en) 2002-02-20 2013-05-14 Apple Inc. Light sensitive display with object detection calibration
US8482698B2 (en) 2008-06-25 2013-07-09 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation
US8576217B2 (en) 2011-05-20 2013-11-05 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US8599191B2 (en) 2011-05-20 2013-12-03 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US8638320B2 (en) 2011-06-22 2014-01-28 Apple Inc. Stylus orientation detection
US8659518B2 (en) 2005-01-28 2014-02-25 Ignis Innovation Inc. Voltage programmed pixel circuit, display system and driving method thereof
US8664644B2 (en) 2001-02-16 2014-03-04 Ignis Innovation Inc. Pixel driver circuit and pixel circuit having the pixel driver circuit
US8687271B2 (en) 2002-03-13 2014-04-01 Dolby Laboratories Licensing Corporation N-modulation displays and related methods
US8743096B2 (en) 2006-04-19 2014-06-03 Ignis Innovation, Inc. Stable driving scheme for active matrix displays
US8803417B2 (en) 2009-12-01 2014-08-12 Ignis Innovation Inc. High resolution pixel architecture
US8860636B2 (en) 2005-06-08 2014-10-14 Ignis Innovation Inc. Method and system for driving a light emitting device display
US8901579B2 (en) 2011-08-03 2014-12-02 Ignis Innovation Inc. Organic light emitting diode and method of manufacturing
US8907991B2 (en) 2010-12-02 2014-12-09 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US8922544B2 (en) 2012-05-23 2014-12-30 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US8928635B2 (en) 2011-06-22 2015-01-06 Apple Inc. Active stylus
US8994617B2 (en) 2010-03-17 2015-03-31 Ignis Innovation Inc. Lifetime uniformity parameter extraction methods
US9030506B2 (en) 2009-11-12 2015-05-12 Ignis Innovation Inc. Stable fast programming scheme for displays
US9058775B2 (en) 2006-01-09 2015-06-16 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9070775B2 (en) 2011-08-03 2015-06-30 Ignis Innovations Inc. Thin film transistor
US9093028B2 (en) 2009-12-06 2015-07-28 Ignis Innovation Inc. System and methods for power conservation for AMOLED pixel drivers
US9111485B2 (en) 2009-06-16 2015-08-18 Ignis Innovation Inc. Compensation technique for color shift in displays
US9134825B2 (en) 2011-05-17 2015-09-15 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US9153172B2 (en) 2004-12-07 2015-10-06 Ignis Innovation Inc. Method and system for programming and driving active matrix light emitting device pixel having a controllable supply voltage
US9171504B2 (en) 2013-01-14 2015-10-27 Ignis Innovation Inc. Driving scheme for emissive displays providing compensation for driving transistor variations
US9171500B2 (en) 2011-05-20 2015-10-27 Ignis Innovation Inc. System and methods for extraction of parasitic parameters in AMOLED displays
US9176604B2 (en) 2012-07-27 2015-11-03 Apple Inc. Stylus device
US9190456B2 (en) 2012-04-25 2015-11-17 Ignis Innovation Inc. High resolution display panel with emissive organic layers emitting light of different colors
US9269322B2 (en) 2006-01-09 2016-02-23 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9305488B2 (en) 2013-03-14 2016-04-05 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US9311859B2 (en) 2009-11-30 2016-04-12 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
US9310923B2 (en) 2010-12-03 2016-04-12 Apple Inc. Input device for touch sensitive devices
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US9329703B2 (en) 2011-06-22 2016-05-03 Apple Inc. Intelligent stylus
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9343006B2 (en) 2012-02-03 2016-05-17 Ignis Innovation Inc. Driving system for active-matrix displays
US9351368B2 (en) 2013-03-08 2016-05-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9370075B2 (en) 2008-12-09 2016-06-14 Ignis Innovation Inc. System and method for fast compensation programming of pixels in a display
US9384698B2 (en) 2009-11-30 2016-07-05 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US9385169B2 (en) 2011-11-29 2016-07-05 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US9430958B2 (en) 2010-02-04 2016-08-30 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9437137B2 (en) 2013-08-12 2016-09-06 Ignis Innovation Inc. Compensation accuracy
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9489891B2 (en) 2006-01-09 2016-11-08 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9502653B2 (en) 2013-12-25 2016-11-22 Ignis Innovation Inc. Electrode contacts
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US9557845B2 (en) 2012-07-27 2017-01-31 Apple Inc. Input device for and method of communication with capacitive devices through frequency variation
US9606607B2 (en) 2011-05-17 2017-03-28 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US9652090B2 (en) 2012-07-27 2017-05-16 Apple Inc. Device for digital communication through capacitive coupling
US9697771B2 (en) 2013-03-08 2017-07-04 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9721505B2 (en) 2013-03-08 2017-08-01 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9741282B2 (en) 2013-12-06 2017-08-22 Ignis Innovation Inc. OLED display system and method
US9747834B2 (en) 2012-05-11 2017-08-29 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
US9761170B2 (en) 2013-12-06 2017-09-12 Ignis Innovation Inc. Correction for localized phenomena in an image array
USRE46561E1 (en) 2008-07-29 2017-09-26 Ignis Innovation Inc. Method and system for driving light emitting display
US9773439B2 (en) 2011-05-27 2017-09-26 Ignis Innovation Inc. Systems and methods for aging compensation in AMOLED displays
US9786209B2 (en) 2009-11-30 2017-10-10 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US9786223B2 (en) 2012-12-11 2017-10-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9799246B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9830857B2 (en) 2013-01-14 2017-11-28 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
US9842889B2 (en) 2014-11-28 2017-12-12 Ignis Innovation Inc. High pixel density array architecture
US9867257B2 (en) 2008-04-18 2018-01-09 Ignis Innovation Inc. System and driving method for light emitting device display
US9881532B2 (en) 2010-02-04 2018-01-30 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
US9881587B2 (en) 2011-05-28 2018-01-30 Ignis Innovation Inc. Systems and methods for operating pixels in a display to mitigate image flicker
US9886899B2 (en) 2011-05-17 2018-02-06 Ignis Innovation Inc. Pixel Circuits for AMOLED displays
US9939935B2 (en) 2013-07-31 2018-04-10 Apple Inc. Scan engine for touch controller architecture
US9947293B2 (en) 2015-05-27 2018-04-17 Ignis Innovation Inc. Systems and methods of reduced memory bandwidth compensation
US9952698B2 (en) 2013-03-15 2018-04-24 Ignis Innovation Inc. Dynamic adjustment of touch resolutions on an AMOLED display
US10013907B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US10012678B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US10019941B2 (en) 2005-09-13 2018-07-10 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
US10048775B2 (en) 2013-03-14 2018-08-14 Apple Inc. Stylus detection and demodulation
US10061449B2 (en) 2014-12-04 2018-08-28 Apple Inc. Coarse scan and targeted active mode scan for touch and stylus
US10074304B2 (en) 2015-08-07 2018-09-11 Ignis Innovation Inc. Systems and methods of pixel calibration based on improved reference values
US10078984B2 (en) 2005-02-10 2018-09-18 Ignis Innovation Inc. Driving circuit for current programmed organic light-emitting diode displays
US10089921B2 (en) 2010-02-04 2018-10-02 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10089924B2 (en) 2011-11-29 2018-10-02 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US10102808B2 (en) 2015-10-14 2018-10-16 Ignis Innovation Inc. Systems and methods of multiple color driving
US10134325B2 (en) 2014-12-08 2018-11-20 Ignis Innovation Inc. Integrated display system
US10152915B2 (en) 2015-04-01 2018-12-11 Ignis Innovation Inc. Systems and methods of display brightness adjustment
US10163401B2 (en) 2010-02-04 2018-12-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10163996B2 (en) 2003-02-24 2018-12-25 Ignis Innovation Inc. Pixel having an organic light emitting diode and method of fabricating the pixel
US10176752B2 (en) 2014-03-24 2019-01-08 Ignis Innovation Inc. Integrated gate driver
US10176736B2 (en) 2010-02-04 2019-01-08 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10181282B2 (en) 2015-01-23 2019-01-15 Ignis Innovation Inc. Compensation for color variations in emissive devices
US10192479B2 (en) 2014-04-08 2019-01-29 Ignis Innovation Inc. Display system using system level resources to calculate compensation parameters for a display module in a portable device
US10204540B2 (en) 2015-10-26 2019-02-12 Ignis Innovation Inc. High density pixel pattern
US10235933B2 (en) 2005-04-12 2019-03-19 Ignis Innovation Inc. System and method for compensation of non-uniformities in light emitting device displays
US10242619B2 (en) 2013-03-08 2019-03-26 Ignis Innovation Inc. Pixel circuits for amoled displays
US10311780B2 (en) 2015-05-04 2019-06-04 Ignis Innovation Inc. Systems and methods of optical feedback
US10319307B2 (en) 2009-06-16 2019-06-11 Ignis Innovation Inc. Display system with compensation techniques and/or shared level resources
US20190237480A1 (en) * 2018-01-31 2019-08-01 Boe Technology Group Co., Ltd. Array substrate, driving method and display device
US10373554B2 (en) 2015-07-24 2019-08-06 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
US10410579B2 (en) 2015-07-24 2019-09-10 Ignis Innovation Inc. Systems and methods of hybrid calibration of bias current
US10474277B2 (en) 2016-05-31 2019-11-12 Apple Inc. Position-based stylus communication
CN110764643A (en) * 2019-10-10 2020-02-07 云谷(固安)科技有限公司 Display panel with touch feedback
US10573231B2 (en) 2010-02-04 2020-02-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10586491B2 (en) 2016-12-06 2020-03-10 Ignis Innovation Inc. Pixel circuits for mitigation of hysteresis
US10657895B2 (en) 2015-07-24 2020-05-19 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
US10714018B2 (en) 2017-05-17 2020-07-14 Ignis Innovation Inc. System and method for loading image correction data for displays
CN111527538A (en) * 2017-11-23 2020-08-11 脸谱科技有限责任公司 Data shift circuit for current mode display
US10867536B2 (en) 2013-04-22 2020-12-15 Ignis Innovation Inc. Inspection system for OLED display panels
US20210083030A1 (en) * 2018-09-28 2021-03-18 Apple Inc. Ambient light sensing display assemblies
US10971078B2 (en) 2018-02-12 2021-04-06 Ignis Innovation Inc. Pixel measurement through data line
US10997901B2 (en) 2014-02-28 2021-05-04 Ignis Innovation Inc. Display system
US10996258B2 (en) 2009-11-30 2021-05-04 Ignis Innovation Inc. Defect detection and correction of pixel circuits for AMOLED displays
US11025899B2 (en) 2017-08-11 2021-06-01 Ignis Innovation Inc. Optical correction systems and methods for correcting non-uniformity of emissive display devices
US20230260454A1 (en) * 2020-11-27 2023-08-17 Chengdu Boe Optoelectronics Technology Co., Ltd. Display substrate, display panel and display apparatus
US11798471B2 (en) 2019-01-11 2023-10-24 Meta Platforms Technologies, Llc Control scheme for a scanning display

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002162934A (en) * 2000-09-29 2002-06-07 Eastman Kodak Co Flat-panel display with luminance feedback
GB2381644A (en) * 2001-10-31 2003-05-07 Cambridge Display Tech Ltd Display drivers
DE60321852D1 (en) * 2002-04-15 2008-08-14 Pioneer Corp Control device with deterioration detection for a self-luminous display device
JP2004151155A (en) * 2002-10-28 2004-05-27 Toshiba Matsushita Display Technology Co Ltd Display device
JP2006517682A (en) * 2003-02-13 2006-07-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Optically addressable matrix display
US20060145970A1 (en) * 2003-02-13 2006-07-06 Koninklijke Philips Electronics N.V. Matrix display device
CA2522396A1 (en) * 2003-04-25 2004-11-11 Visioneered Image Systems, Inc. Led illumination source/display with individual led brightness monitoring capability and calibration method
ES2306837T3 (en) * 2003-05-23 2008-11-16 Barco N.V. IMAGE DISPLAY PROCEDURE IN AN ORGANIC DIODE DISPLAY DEVICE FOR LARGE DISPLAY LIGHT AND VISUALIZING DEVICE USED FOR IT.
JP2004348044A (en) * 2003-05-26 2004-12-09 Seiko Epson Corp Display device, display method, and method for manufacturing display device
US20040257352A1 (en) * 2003-06-18 2004-12-23 Nuelight Corporation Method and apparatus for controlling
US7053412B2 (en) * 2003-06-27 2006-05-30 The Trustees Of Princeton University And Universal Display Corporation Grey scale bistable display
JP2007506145A (en) * 2003-09-23 2007-03-15 イグニス イノベーション インコーポレーテッド Circuit and method for driving an array of light emitting pixels
US20050121600A1 (en) * 2003-12-08 2005-06-09 Ting-Wei Chuang [organic electroluminescent device and fabricating method therefor]
US20050200296A1 (en) * 2004-02-24 2005-09-15 Naugler W. E.Jr. Method and device for flat panel emissive display using shielded or partially shielded sensors to detect user screen inputs
US20050200294A1 (en) * 2004-02-24 2005-09-15 Naugler W. E.Jr. Sidelight illuminated flat panel display and touch panel input device
JP4678134B2 (en) * 2004-03-19 2011-04-27 日本電気株式会社 Display seizure prevention device and display
JP2005292503A (en) * 2004-03-31 2005-10-20 Dainippon Printing Co Ltd Organic el display
US20050243023A1 (en) * 2004-04-06 2005-11-03 Damoder Reddy Color filter integrated with sensor array for flat panel display
CN1981318A (en) * 2004-04-12 2007-06-13 彩光公司 Low power circuits for active matrix emissive displays and methods of operating the same
US20050248515A1 (en) * 2004-04-28 2005-11-10 Naugler W E Jr Stabilized active matrix emissive display
US20050253777A1 (en) * 2004-05-12 2005-11-17 E Ink Corporation Tiled displays and methods for driving same
TWI277031B (en) * 2004-06-22 2007-03-21 Rohm Co Ltd Organic EL drive circuit and organic EL display device using the same organic EL drive circuit
US20060007206A1 (en) * 2004-06-29 2006-01-12 Damoder Reddy Device and method for operating a self-calibrating emissive pixel
US8381135B2 (en) 2004-07-30 2013-02-19 Apple Inc. Proximity detector in handheld device
US20060044299A1 (en) * 2004-08-31 2006-03-02 Jian Wang System and method for compensating for a fabrication artifact in an electronic device
KR101061849B1 (en) * 2004-09-21 2011-09-02 삼성전자주식회사 Information recognition device and information recognition display device
EP1640949A3 (en) * 2004-09-22 2006-04-12 Toppoly Optoelectronics Corp. Design approach and display panel and electronic device utilizing the same
US7400345B2 (en) * 2004-10-22 2008-07-15 Eastman Kodak Company OLED display with aspect ratio compensation
US20060119592A1 (en) * 2004-12-06 2006-06-08 Jian Wang Electronic device and method of using the same
TWI253846B (en) * 2005-03-28 2006-04-21 Ind Tech Res Inst Photo-sensing display unit
KR100627417B1 (en) * 2005-08-26 2006-09-22 삼성에스디아이 주식회사 Organic light emitting diode display and driving method thereof
US20070069632A1 (en) * 2005-09-26 2007-03-29 Toppoly Optoelectronics Corp. Electroluminescent device and pixel device
US7728316B2 (en) 2005-09-30 2010-06-01 Apple Inc. Integrated proximity sensor and light sensor
US7633076B2 (en) 2005-09-30 2009-12-15 Apple Inc. Automated response to and sensing of user activity in portable devices
US7714265B2 (en) 2005-09-30 2010-05-11 Apple Inc. Integrated proximity sensor and light sensor
JP2007141799A (en) * 2005-11-22 2007-06-07 Nec Lcd Technologies Ltd Surface lighting light source, luminance correction circuit and luminance correction method used for surface lighting light source
KR20070083352A (en) * 2006-02-21 2007-08-24 삼성전자주식회사 Display device and driving method thereof
US7825891B2 (en) 2006-06-02 2010-11-02 Apple Inc. Dynamic backlight control system
EP1879169A1 (en) 2006-07-14 2008-01-16 Barco N.V. Aging compensation for display boards comprising light emitting elements
EP1879172A1 (en) * 2006-07-14 2008-01-16 Barco NV Aging compensation for display boards comprising light emitting elements
KR100873072B1 (en) * 2006-08-31 2008-12-09 삼성모바일디스플레이주식회사 Emission driver and organic electro luminescence display thereof
KR101152445B1 (en) * 2006-08-31 2012-06-01 삼성모바일디스플레이주식회사 Emission driver and organic electro luminescence display thereof
KR100811988B1 (en) * 2006-08-31 2008-03-10 삼성에스디아이 주식회사 Emission driver, emission control signal driving method and organic electro luminescence display thereof
JP2010508620A (en) * 2006-09-12 2010-03-18 キユーデイー・ビジヨン・インコーポレーテツド Electroluminescent display useful for displaying a predetermined pattern
US8006002B2 (en) 2006-12-12 2011-08-23 Apple Inc. Methods and systems for automatic configuration of peripherals
JP4959449B2 (en) 2006-12-27 2012-06-20 三星モバイルディスプレイ株式會社 Ambient light sensing circuit and flat panel display having the same
KR100865393B1 (en) * 2006-12-29 2008-10-24 삼성에스디아이 주식회사 Organic Light Emitting Display and Driver Circuit Thereof
KR100824900B1 (en) * 2006-12-29 2008-04-23 삼성에스디아이 주식회사 Organic light emitting display and driver circuit thereof
US8698727B2 (en) 2007-01-05 2014-04-15 Apple Inc. Backlight and ambient light sensor system
US8031164B2 (en) 2007-01-05 2011-10-04 Apple Inc. Backlight and ambient light sensor system
US7957762B2 (en) 2007-01-07 2011-06-07 Apple Inc. Using ambient light sensor to augment proximity sensor output
US8693877B2 (en) 2007-03-09 2014-04-08 Apple Inc. Integrated infrared receiver and emitter for multiple functionalities
US20090002362A1 (en) 2007-06-28 2009-01-01 Boundary Net, Incorporated Image to temporal pixel mapping
TR200705747A2 (en) 2007-08-17 2009-03-23 Vestel Elektroni̇k San. Ve Ti̇c. A.Ş. Automatic adjustment of backlight and pixel brightness on display panels
US7960682B2 (en) 2007-12-13 2011-06-14 Apple Inc. Display device control based on integrated ambient light detection and lighting source characteristics
KR100957947B1 (en) 2008-01-09 2010-05-13 삼성모바일디스플레이주식회사 Photo sensor and plat panel display using the same
EP2342899A4 (en) * 2008-07-23 2013-10-09 Qualcomm Mems Technologies Inc Calibrating pixel elements
JP5193727B2 (en) * 2008-08-01 2013-05-08 パナソニック株式会社 Display device
JP2010153449A (en) * 2008-12-24 2010-07-08 Seiko Epson Corp Light source integrated photoelectric conversion apparatus
JP2010286814A (en) * 2009-05-12 2010-12-24 Sony Corp Display apparatus, light detection method, and electronic apparatus
JP5272885B2 (en) * 2009-05-12 2013-08-28 ソニー株式会社 Display device and control method of light detection operation
US8392507B2 (en) * 2009-07-21 2013-03-05 Honeywell International Inc. Image validation system for remote displays
US20110043541A1 (en) * 2009-08-20 2011-02-24 Cok Ronald S Fault detection in electroluminescent displays
JP2011141418A (en) * 2010-01-07 2011-07-21 Sony Corp Display apparatus, light detection method and electronic apparatus
WO2012035193A1 (en) * 2010-09-17 2012-03-22 Nokia Corporation Adjustment of display brightness
FR2971066B1 (en) 2011-01-31 2013-08-23 Nanotec Solution THREE-DIMENSIONAL MAN-MACHINE INTERFACE.
US9477263B2 (en) 2011-10-27 2016-10-25 Apple Inc. Electronic device with chip-on-glass ambient light sensors
US9357188B2 (en) 2011-11-28 2016-05-31 Industrial Technology Research Institute Photography and projection apparatus and light emitting and sensing module
US9582083B2 (en) 2011-12-22 2017-02-28 Apple Inc. Directional light sensors
US9146304B2 (en) 2012-09-10 2015-09-29 Apple Inc. Optical proximity sensor with ambient light and temperature compensation
US9024530B2 (en) 2012-11-13 2015-05-05 Apple Inc. Synchronized ambient light sensor and display
US9129548B2 (en) 2012-11-15 2015-09-08 Apple Inc. Ambient light sensors with infrared compensation
US9070648B2 (en) 2012-11-27 2015-06-30 Apple Inc. Electronic devices with display-integrated light sensors
US8987652B2 (en) 2012-12-13 2015-03-24 Apple Inc. Electronic device with display and low-noise ambient light sensor with a control circuitry that periodically disables the display
US9310843B2 (en) 2013-01-02 2016-04-12 Apple Inc. Electronic devices with light sensors and displays
FR3002052B1 (en) 2013-02-14 2016-12-09 Fogale Nanotech METHOD AND DEVICE FOR NAVIGATING A DISPLAY SCREEN AND APPARATUS COMPRISING SUCH A NAVIGATION
US10644077B1 (en) 2015-10-28 2020-05-05 Apple Inc. Display with array of light-transmitting windows
US10115000B2 (en) 2015-12-11 2018-10-30 Synaptics Incorporated Method and system for optical imaging using patterned illumination
US10157590B1 (en) 2015-12-15 2018-12-18 Apple Inc. Display with localized brightness adjustment capabilities
US10163984B1 (en) 2016-09-12 2018-12-25 Apple Inc. Display with embedded components and subpixel windows
DE102017200894A1 (en) 2017-01-20 2018-07-26 Zf Friedrichshafen Ag Vehicle display device, gear selection switch, method of checking a display device, and method of manufacturing a display device
US20190123080A1 (en) * 2017-10-19 2019-04-25 The Regents Of The University Of Michigan Sensor circuits for x-ray imagers
KR102011459B1 (en) * 2017-12-01 2019-08-19 엘에스산전 주식회사 Display device capable of self diagnosis for partial discharge
CN108877653B (en) * 2018-06-29 2021-11-02 京东方科技集团股份有限公司 Pixel circuit, display device and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6392617B1 (en) * 1999-10-27 2002-05-21 Agilent Technologies, Inc. Active matrix light emitting diode display
US6542138B1 (en) * 1999-09-11 2003-04-01 Koninklijke Philips Electronics N.V. Active matrix electroluminescent display device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769292A (en) 1987-03-02 1988-09-06 Eastman Kodak Company Electroluminescent device with modified thin film luminescent zone
GB2237400B (en) 1989-10-27 1994-04-20 Eev Ltd Control of liquid crystal display visual properties
US5061569A (en) 1990-07-26 1991-10-29 Eastman Kodak Company Electroluminescent device with organic electroluminescent medium
US5216504A (en) 1991-09-25 1993-06-01 Display Laboratories, Inc. Automatic precision video monitor alignment system
US5371537A (en) 1991-10-31 1994-12-06 Eastman Kodak Company Method and apparatus for automatically calibrating a CRT display
US5929845A (en) 1996-09-03 1999-07-27 Motorola, Inc. Image scanner and display apparatus
US5910792A (en) 1997-11-12 1999-06-08 Candescent Technologies, Corp. Method and apparatus for brightness control in a field emission display
GB9919536D0 (en) 1999-08-19 1999-10-20 Koninkl Philips Electronics Nv Active matrix electroluminescent display device
JP2002162934A (en) 2000-09-29 2002-06-07 Eastman Kodak Co Flat-panel display with luminance feedback
US6320325B1 (en) 2000-11-06 2001-11-20 Eastman Kodak Company Emissive display with luminance feedback from a representative pixel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6542138B1 (en) * 1999-09-11 2003-04-01 Koninklijke Philips Electronics N.V. Active matrix electroluminescent display device
US6392617B1 (en) * 1999-10-27 2002-05-21 Agilent Technologies, Inc. Active matrix light emitting diode display

Cited By (340)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8664644B2 (en) 2001-02-16 2014-03-04 Ignis Innovation Inc. Pixel driver circuit and pixel circuit having the pixel driver circuit
US8890220B2 (en) 2001-02-16 2014-11-18 Ignis Innovation, Inc. Pixel driver circuit and pixel circuit having control circuit coupled to supply voltage
US20070268577A1 (en) * 2001-02-27 2007-11-22 Dolby Canada Corporation Hdr displays having location specific modulation
US8419194B2 (en) 2001-02-27 2013-04-16 Dolby Laboratories Licensing Corporation Locally dimmed display
US7942531B2 (en) 2001-02-27 2011-05-17 Dolby Laboratories Licensing Corporation Edge lit locally dimmed display
US7581837B2 (en) 2001-02-27 2009-09-01 Dolby Laboratories Licensing Corporation HDR displays and control systems therefor
US10261405B2 (en) 2001-02-27 2019-04-16 Dolby Laboratories Licensing Corporation Projection displays
US8408718B2 (en) 2001-02-27 2013-04-02 Dolby Laboratories Licensing Corporation Locally dimmed display
US9804487B2 (en) 2001-02-27 2017-10-31 Dolby Laboratories Licensing Corporation Projection displays
US20080043034A1 (en) * 2001-02-27 2008-02-21 Dolby Canada Corporation Hdr displays and control systems therefor
US20120188296A1 (en) * 2001-02-27 2012-07-26 Dolby Laboratories Licensing Corporation Locally dimmed display
US8172401B2 (en) 2001-02-27 2012-05-08 Dolby Laboratories Licensing Corporation Edge lit locally dimmed display
US20090180078A1 (en) * 2001-02-27 2009-07-16 Lorne Whitehead High dynamic range display devices having color light sources
US20110216387A1 (en) * 2001-02-27 2011-09-08 Dolby Laboratories Licensing Corporation Edge lit locally dimmed display
US9412337B2 (en) 2001-02-27 2016-08-09 Dolby Laboratories Licensing Corporation Projection displays
US8684533B2 (en) 2001-02-27 2014-04-01 Dolby Laboratories Licensing Corporation Projection displays
US8277056B2 (en) * 2001-02-27 2012-10-02 Dolby Laboratories Licensing Corporation Locally dimmed display
US20100302480A1 (en) * 2001-02-27 2010-12-02 Lorne Whitehead Edge lit locally dimmed display
US7801426B2 (en) 2001-02-27 2010-09-21 Dolby Laboratories Licensing Corporation High dynamic range display devices having color light sources
US7753530B2 (en) 2001-02-27 2010-07-13 Dolby Laboratories Licensing Corporation HDR displays and control systems therefor
US7377652B2 (en) 2001-02-27 2008-05-27 Dolby Laboratories Licensing Corporation HDR displays having location specific modulation
US20090284547A1 (en) * 2001-02-27 2009-11-19 Dolby Laboratories Licensing Corporation Hdr displays and control systems therefor
US7413307B2 (en) 2001-02-27 2008-08-19 Dolby Laboratories Licensing Corporation High dynamic range display devices
US7413309B2 (en) 2001-02-27 2008-08-19 Dolby Laboratories Licensing Corporation High dynamic range display devices
US7419267B2 (en) 2001-02-27 2008-09-02 Dolby Laboratories Licensing Corporation HDR displays with overlapping dual modulation
US7602385B2 (en) * 2001-11-29 2009-10-13 Semiconductor Energy Laboratory Co., Ltd. Display device and display system using the same
US20030098875A1 (en) * 2001-11-29 2003-05-29 Yoshiyuki Kurokawa Display device and display system using the same
US8570449B2 (en) 2002-02-20 2013-10-29 Apple Inc. Light sensitive display with pressure sensor
US9134851B2 (en) * 2002-02-20 2015-09-15 Apple Inc. Light sensitive display
US9411470B2 (en) 2002-02-20 2016-08-09 Apple Inc. Light sensitive display with multiple data set object detection
US9971456B2 (en) 2002-02-20 2018-05-15 Apple Inc. Light sensitive display with switchable detection modes for detecting a fingerprint
US7872641B2 (en) 2002-02-20 2011-01-18 Apple Inc. Light sensitive display
US11073926B2 (en) 2002-02-20 2021-07-27 Apple Inc. Light sensitive display
US8441422B2 (en) 2002-02-20 2013-05-14 Apple Inc. Light sensitive display with object detection calibration
US7800822B2 (en) 2002-03-13 2010-09-21 Dolby Laboratories Licensing Corporation HDR displays with individually-controllable color backlights
US8199401B2 (en) 2002-03-13 2012-06-12 Dolby Laboratories Licensing Corporation N-modulation displays and related methods
US7370979B2 (en) * 2002-03-13 2008-05-13 Dolby Laboratories Licensing Corporation Calibration of displays having spatially-variable backlight
US7777945B2 (en) 2002-03-13 2010-08-17 Dolby Laboratories Licensing Corporation HDR displays having light estimating controllers
US8446351B2 (en) 2002-03-13 2013-05-21 Dolby Laboratories Licensing Corporation Edge lit LED based locally dimmed display
US10416480B2 (en) 2002-03-13 2019-09-17 Dolby Laboratories Licensing Corporation Image display
US20070268211A1 (en) * 2002-03-13 2007-11-22 Dolby Canada Coporation Hdr displays with individually-controllable color backlights
US20100007577A1 (en) * 2002-03-13 2010-01-14 Ajit Ninan N-modulation displays and related methods
US20070146257A1 (en) * 2002-03-13 2007-06-28 The University Of British Columbia Motion-blur compensation in backlit displays
US8890799B2 (en) 2002-03-13 2014-11-18 Dolby Laboratories Licensing Corporation Display with red, green, and blue light sources
US20070097321A1 (en) * 2002-03-13 2007-05-03 The University Of British Columbia Calibration of displays having spatially-variable backlight
US8125425B2 (en) 2002-03-13 2012-02-28 Dolby Laboratories Licensing Corporation HDR displays with dual modulators having different resolutions
US8059110B2 (en) 2002-03-13 2011-11-15 Dolby Laboratories Licensing Corporation Motion-blur compensation in backlit displays
US20080018985A1 (en) * 2002-03-13 2008-01-24 Dolby Canada Corporation Hdr displays having light estimating controllers
US20050162737A1 (en) * 2002-03-13 2005-07-28 Whitehead Lorne A. High dynamic range display devices
US8687271B2 (en) 2002-03-13 2014-04-01 Dolby Laboratories Licensing Corporation N-modulation displays and related methods
US9270956B2 (en) 2002-03-13 2016-02-23 Dolby Laboratories Licensing Corporation Image display
US20070268224A1 (en) * 2002-03-13 2007-11-22 Dolby Canada Corporation Hdr displays with dual modulators having different resolutions
US11378840B2 (en) 2002-03-13 2022-07-05 Dolby Laboratories Licensing Corporation Image display
US20080055498A1 (en) * 2002-05-23 2008-03-06 Adiel Abileah Light sensitive display
US9354735B2 (en) 2002-05-23 2016-05-31 Apple Inc. Light sensitive display
US8044930B2 (en) 2002-05-23 2011-10-25 Apple Inc. Light sensitive display
US7880733B2 (en) 2002-05-23 2011-02-01 Apple Inc. Light sensitive display
US7830461B2 (en) 2002-05-23 2010-11-09 Apple Inc. Light sensitive display
US7880819B2 (en) 2002-05-23 2011-02-01 Apple Inc. Light sensitive display
US20080055496A1 (en) * 2002-05-23 2008-03-06 Adiel Abileah Light sensitive display
US20050280766A1 (en) * 2002-09-16 2005-12-22 Koninkiljke Phillips Electronics Nv Display device
US8207946B2 (en) 2003-02-20 2012-06-26 Apple Inc. Light sensitive display
US10163996B2 (en) 2003-02-24 2018-12-25 Ignis Innovation Inc. Pixel having an organic light emitting diode and method of fabricating the pixel
US9472139B2 (en) 2003-09-23 2016-10-18 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US9472138B2 (en) 2003-09-23 2016-10-18 Ignis Innovation Inc. Pixel driver circuit with load-balance in current mirror circuit
US7978187B2 (en) * 2003-09-23 2011-07-12 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US20070080908A1 (en) * 2003-09-23 2007-04-12 Arokia Nathan Circuit and method for driving an array of light emitting pixels
US8553018B2 (en) 2003-09-23 2013-10-08 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US9852689B2 (en) 2003-09-23 2017-12-26 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US10089929B2 (en) 2003-09-23 2018-10-02 Ignis Innovation Inc. Pixel driver circuit with load-balance in current mirror circuit
US8941697B2 (en) 2003-09-23 2015-01-27 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US7859494B2 (en) * 2004-01-02 2010-12-28 Samsung Electronics Co., Ltd. Display device and driving method thereof
US20050179625A1 (en) * 2004-01-02 2005-08-18 Choi Joon-Hoo Display device and driving method thereof
US7223958B2 (en) * 2004-01-13 2007-05-29 Seiko Epson Corporation Device for and method of driving an electro-optical device
US20050151059A1 (en) * 2004-01-13 2005-07-14 Seiko Epson Corporation Electro-optical device, method for driving the same, and electronic apparatus
US20050200292A1 (en) * 2004-02-24 2005-09-15 Naugler W. E.Jr. Emissive display device having sensing for luminance stabilization and user light or touch screen input
US8289429B2 (en) 2004-04-16 2012-10-16 Apple Inc. Image sensor with photosensitive thin film transistors and dark current compensation
US8115707B2 (en) 2004-06-29 2012-02-14 Ignis Innovation Inc. Voltage-programming scheme for current-driven AMOLED displays
USRE47257E1 (en) 2004-06-29 2019-02-26 Ignis Innovation Inc. Voltage-programming scheme for current-driven AMOLED displays
USRE45291E1 (en) 2004-06-29 2014-12-16 Ignis Innovation Inc. Voltage-programming scheme for current-driven AMOLED displays
US8232939B2 (en) 2004-06-29 2012-07-31 Ignis Innovation, Inc. Voltage-programming scheme for current-driven AMOLED displays
US20080191976A1 (en) * 2004-06-29 2008-08-14 Arokia Nathan Voltage-Programming Scheme for Current-Driven Arnoled Displays
US20090166643A1 (en) * 2004-08-13 2009-07-02 Paul Steven Schranz Light emitting and image sensing device and apparatus
US9153172B2 (en) 2004-12-07 2015-10-06 Ignis Innovation Inc. Method and system for programming and driving active matrix light emitting device pixel having a controllable supply voltage
US9741292B2 (en) 2004-12-07 2017-08-22 Ignis Innovation Inc. Method and system for programming and driving active matrix light emitting device pixel having a controllable supply voltage
US20100033469A1 (en) * 2004-12-15 2010-02-11 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US8736524B2 (en) 2004-12-15 2014-05-27 Ignis Innovation, Inc. Method and system for programming, calibrating and driving a light emitting device display
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10013907B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US10012678B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US8994625B2 (en) 2004-12-15 2015-03-31 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US8259044B2 (en) 2004-12-15 2012-09-04 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US10699624B2 (en) 2004-12-15 2020-06-30 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US9970964B2 (en) 2004-12-15 2018-05-15 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US8816946B2 (en) 2004-12-15 2014-08-26 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US9373645B2 (en) 2005-01-28 2016-06-21 Ignis Innovation Inc. Voltage programmed pixel circuit, display system and driving method thereof
US9728135B2 (en) 2005-01-28 2017-08-08 Ignis Innovation Inc. Voltage programmed pixel circuit, display system and driving method thereof
US8659518B2 (en) 2005-01-28 2014-02-25 Ignis Innovation Inc. Voltage programmed pixel circuit, display system and driving method thereof
US10078984B2 (en) 2005-02-10 2018-09-18 Ignis Innovation Inc. Driving circuit for current programmed organic light-emitting diode displays
US10235933B2 (en) 2005-04-12 2019-03-19 Ignis Innovation Inc. System and method for compensation of non-uniformities in light emitting device displays
US8860636B2 (en) 2005-06-08 2014-10-14 Ignis Innovation Inc. Method and system for driving a light emitting device display
US9330598B2 (en) 2005-06-08 2016-05-03 Ignis Innovation Inc. Method and system for driving a light emitting device display
US10388221B2 (en) 2005-06-08 2019-08-20 Ignis Innovation Inc. Method and system for driving a light emitting device display
US9805653B2 (en) 2005-06-08 2017-10-31 Ignis Innovation Inc. Method and system for driving a light emitting device display
US8223177B2 (en) 2005-07-06 2012-07-17 Ignis Innovation Inc. Method and system for driving a pixel circuit in an active matrix display
US20070008253A1 (en) * 2005-07-06 2007-01-11 Arokia Nathan Method and system for driving a pixel circuit in an active matrix display
US10019941B2 (en) 2005-09-13 2018-07-10 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
US20080245561A1 (en) * 2005-12-21 2008-10-09 Rohde & Schwarz Gmbh & Co. Kg Housing for Shielding from Electromagnetic Interference
US9269322B2 (en) 2006-01-09 2016-02-23 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US10262587B2 (en) 2006-01-09 2019-04-16 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US10229647B2 (en) 2006-01-09 2019-03-12 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9058775B2 (en) 2006-01-09 2015-06-16 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9489891B2 (en) 2006-01-09 2016-11-08 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US20070195020A1 (en) * 2006-02-10 2007-08-23 Ignis Innovation, Inc. Method and System for Light Emitting Device Displays
US7924249B2 (en) 2006-02-10 2011-04-12 Ignis Innovation Inc. Method and system for light emitting device displays
US20090160741A1 (en) * 2006-04-13 2009-06-25 Kazuyoshi Inoue Electro-optic device, and tft substrate for current control and method for manufacturing the same
US8743096B2 (en) 2006-04-19 2014-06-03 Ignis Innovation, Inc. Stable driving scheme for active matrix displays
US10127860B2 (en) 2006-04-19 2018-11-13 Ignis Innovation Inc. Stable driving scheme for active matrix displays
US9633597B2 (en) 2006-04-19 2017-04-25 Ignis Innovation Inc. Stable driving scheme for active matrix displays
US10453397B2 (en) 2006-04-19 2019-10-22 Ignis Innovation Inc. Stable driving scheme for active matrix displays
US9842544B2 (en) 2006-04-19 2017-12-12 Ignis Innovation Inc. Stable driving scheme for active matrix displays
US10325554B2 (en) 2006-08-15 2019-06-18 Ignis Innovation Inc. OLED luminance degradation compensation
US8279143B2 (en) 2006-08-15 2012-10-02 Ignis Innovation Inc. OLED luminance degradation compensation
US8581809B2 (en) 2006-08-15 2013-11-12 Ignis Innovation Inc. OLED luminance degradation compensation
US9125278B2 (en) 2006-08-15 2015-09-01 Ignis Innovation Inc. OLED luminance degradation compensation
US8026876B2 (en) 2006-08-15 2011-09-27 Ignis Innovation Inc. OLED luminance degradation compensation
US9530352B2 (en) 2006-08-15 2016-12-27 Ignis Innovations Inc. OLED luminance degradation compensation
US8471807B2 (en) 2007-02-01 2013-06-25 Dolby Laboratories Licensing Corporation Calibration of displays having spatially-variable backlight
US20100002026A1 (en) * 2007-02-01 2010-01-07 Dolby Laboratories Licensing Corporation Calibration of displays having spatially-variable backlight
US8294187B2 (en) 2007-03-15 2012-10-23 Omnivision Technologies, Inc. Reduced pixel area image sensor
US20080225148A1 (en) * 2007-03-15 2008-09-18 Christopher Parks Reduced pixel area image sensor
TWI418021B (en) * 2007-03-15 2013-12-01 Omnivision Tech Inc Reduced pixel area image sensor
US7915702B2 (en) * 2007-03-15 2011-03-29 Eastman Kodak Company Reduced pixel area image sensor
US20110095261A1 (en) * 2008-02-07 2011-04-28 Kazlas Peter T Flexible devices including semiconductor nanocrystals, arrays, and methods
US9431623B2 (en) * 2008-02-07 2016-08-30 Qd Vision, Inc. Flexible devices including semiconductor nanocrystals, arrays, and methods
US9867257B2 (en) 2008-04-18 2018-01-09 Ignis Innovation Inc. System and driving method for light emitting device display
US10555398B2 (en) 2008-04-18 2020-02-04 Ignis Innovation Inc. System and driving method for light emitting device display
US9877371B2 (en) 2008-04-18 2018-01-23 Ignis Innovations Inc. System and driving method for light emitting device display
US9711111B2 (en) 2008-06-25 2017-07-18 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation
US10607569B2 (en) 2008-06-25 2020-03-31 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation
US8482698B2 (en) 2008-06-25 2013-07-09 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation
USRE49389E1 (en) 2008-07-29 2023-01-24 Ignis Innovation Inc. Method and system for driving light emitting display
USRE46561E1 (en) 2008-07-29 2017-09-26 Ignis Innovation Inc. Method and system for driving light emitting display
US9370075B2 (en) 2008-12-09 2016-06-14 Ignis Innovation Inc. System and method for fast compensation programming of pixels in a display
US9824632B2 (en) 2008-12-09 2017-11-21 Ignis Innovation Inc. Systems and method for fast compensation programming of pixels in a display
US11030949B2 (en) 2008-12-09 2021-06-08 Ignis Innovation Inc. Systems and method for fast compensation programming of pixels in a display
US10134335B2 (en) 2008-12-09 2018-11-20 Ignis Innovation Inc. Systems and method for fast compensation programming of pixels in a display
US20100214282A1 (en) * 2009-02-24 2010-08-26 Dolby Laboratories Licensing Corporation Apparatus for providing light source modulation in dual modulator displays
US9911389B2 (en) 2009-02-24 2018-03-06 Dolby Laboratories Licensing Corporation Locally dimmed quantum dot display
US9099046B2 (en) 2009-02-24 2015-08-04 Dolby Laboratories Licensing Corporation Apparatus for providing light source modulation in dual modulator displays
US10373574B2 (en) 2009-02-24 2019-08-06 Dolby Laboratories Licensing Corporation Locally dimmed quantum dot display
US9478182B2 (en) 2009-02-24 2016-10-25 Dolby Laboratories Licensing Corporation Locally dimmed quantum dots (nano-crystal) based display
US10319307B2 (en) 2009-06-16 2019-06-11 Ignis Innovation Inc. Display system with compensation techniques and/or shared level resources
US9111485B2 (en) 2009-06-16 2015-08-18 Ignis Innovation Inc. Compensation technique for color shift in displays
US9117400B2 (en) 2009-06-16 2015-08-25 Ignis Innovation Inc. Compensation technique for color shift in displays
US9418587B2 (en) 2009-06-16 2016-08-16 Ignis Innovation Inc. Compensation technique for color shift in displays
US10553141B2 (en) 2009-06-16 2020-02-04 Ignis Innovation Inc. Compensation technique for color shift in displays
US20110074753A1 (en) * 2009-09-25 2011-03-31 Sony Corporation Display apparatus
US9030506B2 (en) 2009-11-12 2015-05-12 Ignis Innovation Inc. Stable fast programming scheme for displays
US9818376B2 (en) 2009-11-12 2017-11-14 Ignis Innovation Inc. Stable fast programming scheme for displays
US10685627B2 (en) 2009-11-12 2020-06-16 Ignis Innovation Inc. Stable fast programming scheme for displays
US10679533B2 (en) 2009-11-30 2020-06-09 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US9311859B2 (en) 2009-11-30 2016-04-12 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
US10699613B2 (en) 2009-11-30 2020-06-30 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
US10996258B2 (en) 2009-11-30 2021-05-04 Ignis Innovation Inc. Defect detection and correction of pixel circuits for AMOLED displays
US9384698B2 (en) 2009-11-30 2016-07-05 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US10304390B2 (en) 2009-11-30 2019-05-28 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US9786209B2 (en) 2009-11-30 2017-10-10 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US8803417B2 (en) 2009-12-01 2014-08-12 Ignis Innovation Inc. High resolution pixel architecture
US8552636B2 (en) 2009-12-01 2013-10-08 Ignis Innovation Inc. High resolution pixel architecture
US20110128262A1 (en) * 2009-12-01 2011-06-02 Ignis Innovation Inc. High resolution pixel architecture
US9059117B2 (en) 2009-12-01 2015-06-16 Ignis Innovation Inc. High resolution pixel architecture
US9093028B2 (en) 2009-12-06 2015-07-28 Ignis Innovation Inc. System and methods for power conservation for AMOLED pixel drivers
US9262965B2 (en) 2009-12-06 2016-02-16 Ignis Innovation Inc. System and methods for power conservation for AMOLED pixel drivers
US10032399B2 (en) 2010-02-04 2018-07-24 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10573231B2 (en) 2010-02-04 2020-02-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10163401B2 (en) 2010-02-04 2018-12-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9430958B2 (en) 2010-02-04 2016-08-30 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10395574B2 (en) 2010-02-04 2019-08-27 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9881532B2 (en) 2010-02-04 2018-01-30 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
US10176736B2 (en) 2010-02-04 2019-01-08 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9773441B2 (en) 2010-02-04 2017-09-26 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US11200839B2 (en) 2010-02-04 2021-12-14 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10089921B2 (en) 2010-02-04 2018-10-02 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10971043B2 (en) 2010-02-04 2021-04-06 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
US8994617B2 (en) 2010-03-17 2015-03-31 Ignis Innovation Inc. Lifetime uniformity parameter extraction methods
US10460669B2 (en) 2010-12-02 2019-10-29 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9489897B2 (en) 2010-12-02 2016-11-08 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US8907991B2 (en) 2010-12-02 2014-12-09 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9997110B2 (en) 2010-12-02 2018-06-12 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9310923B2 (en) 2010-12-03 2016-04-12 Apple Inc. Input device for touch sensitive devices
US20120154337A1 (en) * 2010-12-15 2012-06-21 Semiconductor Energy Laboratory Co., Ltd. Semiconductor Device and Driving Method Thereof
US9841843B2 (en) * 2010-12-15 2017-12-12 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and driving method thereof
US8624882B2 (en) * 2011-02-10 2014-01-07 Global Oled Technology Llc Digital display with integrated computing circuit
US20120206421A1 (en) * 2011-02-10 2012-08-16 Cok Ronald S Digital display with integrated computing circuit
US9134825B2 (en) 2011-05-17 2015-09-15 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US10515585B2 (en) 2011-05-17 2019-12-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9886899B2 (en) 2011-05-17 2018-02-06 Ignis Innovation Inc. Pixel Circuits for AMOLED displays
US10249237B2 (en) 2011-05-17 2019-04-02 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US9606607B2 (en) 2011-05-17 2017-03-28 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US8576217B2 (en) 2011-05-20 2013-11-05 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10475379B2 (en) 2011-05-20 2019-11-12 Ignis Innovation Inc. Charged-based compensation and parameter extraction in AMOLED displays
US8599191B2 (en) 2011-05-20 2013-12-03 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10325537B2 (en) 2011-05-20 2019-06-18 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10032400B2 (en) 2011-05-20 2018-07-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9093029B2 (en) 2011-05-20 2015-07-28 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10127846B2 (en) 2011-05-20 2018-11-13 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9799246B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US10580337B2 (en) 2011-05-20 2020-03-03 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9171500B2 (en) 2011-05-20 2015-10-27 Ignis Innovation Inc. System and methods for extraction of parasitic parameters in AMOLED displays
US9589490B2 (en) 2011-05-20 2017-03-07 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9799248B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9355584B2 (en) 2011-05-20 2016-05-31 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US10706754B2 (en) 2011-05-26 2020-07-07 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9978297B2 (en) 2011-05-26 2018-05-22 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9640112B2 (en) 2011-05-26 2017-05-02 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9773439B2 (en) 2011-05-27 2017-09-26 Ignis Innovation Inc. Systems and methods for aging compensation in AMOLED displays
US10417945B2 (en) 2011-05-27 2019-09-17 Ignis Innovation Inc. Systems and methods for aging compensation in AMOLED displays
US9984607B2 (en) 2011-05-27 2018-05-29 Ignis Innovation Inc. Systems and methods for aging compensation in AMOLED displays
US9881587B2 (en) 2011-05-28 2018-01-30 Ignis Innovation Inc. Systems and methods for operating pixels in a display to mitigate image flicker
US10290284B2 (en) 2011-05-28 2019-05-14 Ignis Innovation Inc. Systems and methods for operating pixels in a display to mitigate image flicker
US8638320B2 (en) 2011-06-22 2014-01-28 Apple Inc. Stylus orientation detection
US9921684B2 (en) 2011-06-22 2018-03-20 Apple Inc. Intelligent stylus
US8928635B2 (en) 2011-06-22 2015-01-06 Apple Inc. Active stylus
US9329703B2 (en) 2011-06-22 2016-05-03 Apple Inc. Intelligent stylus
US9519361B2 (en) 2011-06-22 2016-12-13 Apple Inc. Active stylus
US9070775B2 (en) 2011-08-03 2015-06-30 Ignis Innovations Inc. Thin film transistor
US9224954B2 (en) 2011-08-03 2015-12-29 Ignis Innovation Inc. Organic light emitting diode and method of manufacturing
US8901579B2 (en) 2011-08-03 2014-12-02 Ignis Innovation Inc. Organic light emitting diode and method of manufacturing
US9385169B2 (en) 2011-11-29 2016-07-05 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US10079269B2 (en) 2011-11-29 2018-09-18 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US10453904B2 (en) 2011-11-29 2019-10-22 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US9818806B2 (en) 2011-11-29 2017-11-14 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US10089924B2 (en) 2011-11-29 2018-10-02 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US10380944B2 (en) 2011-11-29 2019-08-13 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US10453394B2 (en) 2012-02-03 2019-10-22 Ignis Innovation Inc. Driving system for active-matrix displays
US9792857B2 (en) 2012-02-03 2017-10-17 Ignis Innovation Inc. Driving system for active-matrix displays
US9343006B2 (en) 2012-02-03 2016-05-17 Ignis Innovation Inc. Driving system for active-matrix displays
US10043448B2 (en) 2012-02-03 2018-08-07 Ignis Innovation Inc. Driving system for active-matrix displays
USRE48002E1 (en) 2012-04-25 2020-05-19 Ignis Innovation Inc. High resolution display panel with emissive organic layers emitting light of different colors
US9190456B2 (en) 2012-04-25 2015-11-17 Ignis Innovation Inc. High resolution display panel with emissive organic layers emitting light of different colors
US10424245B2 (en) 2012-05-11 2019-09-24 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
US9747834B2 (en) 2012-05-11 2017-08-29 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
US9536460B2 (en) 2012-05-23 2017-01-03 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US8922544B2 (en) 2012-05-23 2014-12-30 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US9368063B2 (en) 2012-05-23 2016-06-14 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US10176738B2 (en) 2012-05-23 2019-01-08 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US9741279B2 (en) 2012-05-23 2017-08-22 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US9940861B2 (en) 2012-05-23 2018-04-10 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US9652090B2 (en) 2012-07-27 2017-05-16 Apple Inc. Device for digital communication through capacitive coupling
US9176604B2 (en) 2012-07-27 2015-11-03 Apple Inc. Stylus device
US9582105B2 (en) 2012-07-27 2017-02-28 Apple Inc. Input device for touch sensitive devices
US9557845B2 (en) 2012-07-27 2017-01-31 Apple Inc. Input device for and method of communication with capacitive devices through frequency variation
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9685114B2 (en) 2012-12-11 2017-06-20 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US11030955B2 (en) 2012-12-11 2021-06-08 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9978310B2 (en) 2012-12-11 2018-05-22 Ignis Innovation Inc. Pixel circuits for amoled displays
US9997106B2 (en) 2012-12-11 2018-06-12 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US10140925B2 (en) 2012-12-11 2018-11-27 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9786223B2 (en) 2012-12-11 2017-10-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US10311790B2 (en) 2012-12-11 2019-06-04 Ignis Innovation Inc. Pixel circuits for amoled displays
US10847087B2 (en) 2013-01-14 2020-11-24 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
US9830857B2 (en) 2013-01-14 2017-11-28 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
US9171504B2 (en) 2013-01-14 2015-10-27 Ignis Innovation Inc. Driving scheme for emissive displays providing compensation for driving transistor variations
US11875744B2 (en) 2013-01-14 2024-01-16 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
US10013915B2 (en) 2013-03-08 2018-07-03 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9934725B2 (en) 2013-03-08 2018-04-03 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9697771B2 (en) 2013-03-08 2017-07-04 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9922596B2 (en) 2013-03-08 2018-03-20 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9659527B2 (en) 2013-03-08 2017-05-23 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US10242619B2 (en) 2013-03-08 2019-03-26 Ignis Innovation Inc. Pixel circuits for amoled displays
US10593263B2 (en) 2013-03-08 2020-03-17 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9721505B2 (en) 2013-03-08 2017-08-01 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9351368B2 (en) 2013-03-08 2016-05-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9818323B2 (en) 2013-03-14 2017-11-14 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US9536465B2 (en) 2013-03-14 2017-01-03 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US10048775B2 (en) 2013-03-14 2018-08-14 Apple Inc. Stylus detection and demodulation
US10198979B2 (en) 2013-03-14 2019-02-05 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US9305488B2 (en) 2013-03-14 2016-04-05 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US10460660B2 (en) 2013-03-15 2019-10-29 Ingis Innovation Inc. AMOLED displays with multiple readout circuits
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US9952698B2 (en) 2013-03-15 2018-04-24 Ignis Innovation Inc. Dynamic adjustment of touch resolutions on an AMOLED display
US9997107B2 (en) 2013-03-15 2018-06-12 Ignis Innovation Inc. AMOLED displays with multiple readout circuits
US9721512B2 (en) 2013-03-15 2017-08-01 Ignis Innovation Inc. AMOLED displays with multiple readout circuits
US10867536B2 (en) 2013-04-22 2020-12-15 Ignis Innovation Inc. Inspection system for OLED display panels
US10067580B2 (en) 2013-07-31 2018-09-04 Apple Inc. Active stylus for use with touch controller architecture
US11687192B2 (en) 2013-07-31 2023-06-27 Apple Inc. Touch controller architecture
US9939935B2 (en) 2013-07-31 2018-04-10 Apple Inc. Scan engine for touch controller architecture
US10845901B2 (en) 2013-07-31 2020-11-24 Apple Inc. Touch controller architecture
US10600362B2 (en) 2013-08-12 2020-03-24 Ignis Innovation Inc. Compensation accuracy
US9990882B2 (en) 2013-08-12 2018-06-05 Ignis Innovation Inc. Compensation accuracy
US9437137B2 (en) 2013-08-12 2016-09-06 Ignis Innovation Inc. Compensation accuracy
US10395585B2 (en) 2013-12-06 2019-08-27 Ignis Innovation Inc. OLED display system and method
US9741282B2 (en) 2013-12-06 2017-08-22 Ignis Innovation Inc. OLED display system and method
US10186190B2 (en) 2013-12-06 2019-01-22 Ignis Innovation Inc. Correction for localized phenomena in an image array
US9761170B2 (en) 2013-12-06 2017-09-12 Ignis Innovation Inc. Correction for localized phenomena in an image array
US10439159B2 (en) 2013-12-25 2019-10-08 Ignis Innovation Inc. Electrode contacts
US9831462B2 (en) 2013-12-25 2017-11-28 Ignis Innovation Inc. Electrode contacts
US9502653B2 (en) 2013-12-25 2016-11-22 Ignis Innovation Inc. Electrode contacts
US10997901B2 (en) 2014-02-28 2021-05-04 Ignis Innovation Inc. Display system
US10176752B2 (en) 2014-03-24 2019-01-08 Ignis Innovation Inc. Integrated gate driver
US10192479B2 (en) 2014-04-08 2019-01-29 Ignis Innovation Inc. Display system using system level resources to calculate compensation parameters for a display module in a portable device
US10170522B2 (en) 2014-11-28 2019-01-01 Ignis Innovations Inc. High pixel density array architecture
US9842889B2 (en) 2014-11-28 2017-12-12 Ignis Innovation Inc. High pixel density array architecture
US10067618B2 (en) 2014-12-04 2018-09-04 Apple Inc. Coarse scan and targeted active mode scan for touch
US10061449B2 (en) 2014-12-04 2018-08-28 Apple Inc. Coarse scan and targeted active mode scan for touch and stylus
US10664113B2 (en) 2014-12-04 2020-05-26 Apple Inc. Coarse scan and targeted active mode scan for touch and stylus
US10061450B2 (en) 2014-12-04 2018-08-28 Apple Inc. Coarse scan and targeted active mode scan for touch
US10134325B2 (en) 2014-12-08 2018-11-20 Ignis Innovation Inc. Integrated display system
US10726761B2 (en) 2014-12-08 2020-07-28 Ignis Innovation Inc. Integrated display system
US10181282B2 (en) 2015-01-23 2019-01-15 Ignis Innovation Inc. Compensation for color variations in emissive devices
US10152915B2 (en) 2015-04-01 2018-12-11 Ignis Innovation Inc. Systems and methods of display brightness adjustment
US10311780B2 (en) 2015-05-04 2019-06-04 Ignis Innovation Inc. Systems and methods of optical feedback
US10403230B2 (en) 2015-05-27 2019-09-03 Ignis Innovation Inc. Systems and methods of reduced memory bandwidth compensation
US9947293B2 (en) 2015-05-27 2018-04-17 Ignis Innovation Inc. Systems and methods of reduced memory bandwidth compensation
US10410579B2 (en) 2015-07-24 2019-09-10 Ignis Innovation Inc. Systems and methods of hybrid calibration of bias current
US10657895B2 (en) 2015-07-24 2020-05-19 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
US10373554B2 (en) 2015-07-24 2019-08-06 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
US10339860B2 (en) 2015-08-07 2019-07-02 Ignis Innovation, Inc. Systems and methods of pixel calibration based on improved reference values
US10074304B2 (en) 2015-08-07 2018-09-11 Ignis Innovation Inc. Systems and methods of pixel calibration based on improved reference values
US10102808B2 (en) 2015-10-14 2018-10-16 Ignis Innovation Inc. Systems and methods of multiple color driving
US10446086B2 (en) 2015-10-14 2019-10-15 Ignis Innovation Inc. Systems and methods of multiple color driving
US10204540B2 (en) 2015-10-26 2019-02-12 Ignis Innovation Inc. High density pixel pattern
US10474277B2 (en) 2016-05-31 2019-11-12 Apple Inc. Position-based stylus communication
US10586491B2 (en) 2016-12-06 2020-03-10 Ignis Innovation Inc. Pixel circuits for mitigation of hysteresis
US10714018B2 (en) 2017-05-17 2020-07-14 Ignis Innovation Inc. System and method for loading image correction data for displays
US11025899B2 (en) 2017-08-11 2021-06-01 Ignis Innovation Inc. Optical correction systems and methods for correcting non-uniformity of emissive display devices
US11792387B2 (en) 2017-08-11 2023-10-17 Ignis Innovation Inc. Optical correction systems and methods for correcting non-uniformity of emissive display devices
CN111527538A (en) * 2017-11-23 2020-08-11 脸谱科技有限责任公司 Data shift circuit for current mode display
US20190237480A1 (en) * 2018-01-31 2019-08-01 Boe Technology Group Co., Ltd. Array substrate, driving method and display device
US10923507B2 (en) * 2018-01-31 2021-02-16 Boe Technology Group Co., Ltd. Array substrate with improvement reading speed, driving method and display device
US10971078B2 (en) 2018-02-12 2021-04-06 Ignis Innovation Inc. Pixel measurement through data line
US11847976B2 (en) 2018-02-12 2023-12-19 Ignis Innovation Inc. Pixel measurement through data line
US20210083030A1 (en) * 2018-09-28 2021-03-18 Apple Inc. Ambient light sensing display assemblies
US11798471B2 (en) 2019-01-11 2023-10-24 Meta Platforms Technologies, Llc Control scheme for a scanning display
CN110764643A (en) * 2019-10-10 2020-02-07 云谷(固安)科技有限公司 Display panel with touch feedback
US20230260454A1 (en) * 2020-11-27 2023-08-17 Chengdu Boe Optoelectronics Technology Co., Ltd. Display substrate, display panel and display apparatus

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